Control bellcrank
Locate the tail rotor pitch control bellcrank
The bellcrank is the L-shaped piece of metal on a center pivot point that connects the tail rotor push/pull tubes to the tail rotor swashplate
Push the bellcrank back and forth, ensuring that it functions smoothly
Ensure there are no cracks or damage on the bellcrank
Ensure the torque stripes are in a continuous line and not broken
Ensure all hardware is tight/secure